#define _CRT_SECURE_NO_WARNINGS 1

#include"Calendar.h"

Date::Date(int year,int month ,int day)
{
	_year = year;
	_month = month;
	_day = day;
}

Date::Date(const Date& d)
{
	_year = d._year;
	_month = d._month;
	_day = d._day;
}

Date::~Date()
{

}

Date& Date::operator = (const Date& d)
{
	_year = d._year;
	_month = d._month;
	_day = d._day;

	return *this;
}

Date& Date::operator += (int day)
{
	if (day < 0)
	{
		day *= -1;
		*this -= day;

		return *this;
	}

	_day += day;

	while (_day > GetMonthDay(_year, _month))
	{
		_day -= GetMonthDay(_year, _month);
		++_month;
		if (_month == 12)
		{
			++_year;
			_month = 1;
		}
	}

	return *this;
}

Date Date::operator + (int day)
{
	Date d(*this);
	d += day;

	return d;
}

Date& Date::operator -= (int day)
{
	if (day < 0)
	{
		day *= -1;
		*this += day;

		return  *this;
	}

	_day -= day;

	while (_day <= 0)
	{
		_day += GetMonthDay(_year,_month);
		if (_month == 0)
		{
			--_year;
			_month = 12;
		}
	}

	return *this;
}

bool Date::operator == (const Date& d)
{
	return _year == d._year &&
		_month == d._month &&
		_day == d._day;
}

bool Date::operator != (const Date& d)
{
	return !((*this) == d);
}

bool Date::operator < (const Date& d)
{
	if (_year < d._year)
	{
		return true;
	}
	if (_year == d._year)
	{
		if (_month < d._month)
		{
			return true;
		}
		if (_month == d._month)
		{
			if (_day < d._day)
			{
				return true;
			}
		}
	}
	return false;
}

bool Date::operator > (const Date& d)
{
	if ((*this) == d)
	{
		return false;
	}
	if ((*this) < d)
	{
		return false;
	}

	return true;
}

Date& Date::operator ++ ()
{
	(*this) += 1;

	return (*this);
}

Date Date::operator ++ (int)
{
	Date tmp = (*this);
	*this += 1;

	return tmp;
}

bool Date:: operator >= (const Date& d)
{
	return !((*this) < d);
}

bool Date:: operator <= (const Date& d)
{
	return !((*this) > d);
}

Date& Date::operator -- ()
{
	(*this) -= 1;

	return (*this);
}

Date Date::operator -- (int)
{
	Date tmp(*this);
	(*this) -= 1;

	return tmp;
}

int Date:: operator - (const Date& d)
{
	Date max(*this);
	Date min(d);
	if ((*this) < d)
	{
		max = d;
		min = (*this);
	}	

	int x = 0;

	while (max > min)
	{
		++min;
		++x;
	}

	return x;
}